ML20054B620

Package Evaluation Model GNM-20,Type B Quantities. IAEA Certificate of Competent Authority Encl

ML20054B620
Person / Time
Site:	07109161
Issue date:	03/04/1982
From:	GULF NUCLEAR, INC.
To:
Shared Package
ML20054B618	List: ML20054B612 ML20054B620
References
20477, NUDOCS 8204190004
Download: ML20054B620 (20)

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['TPA!!SPORTATI0i! APPP,0VALS" Docket ';o.

py;i f L} b N0)~ S O Willian 0. Miller License Fee Management Branch Office of Administration MATERIALS TPat'SPORTATION APPRO'/AL CLASSIFICATI0!!

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f Applicant:

/b8 72/%cd'.0tj Approval l'o:~

Fee Category M Application Dated: O/g/fM Received: 3 // g: / f u

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Applicant's Classifica(tion:

1 The abc.ve application for amendment has been reviewed by the :NSs Transportation Branch, in accordar.ce with Section 170.31, and is classified as follows:

1. ' Amendments to Acorovals in Fee Cat;cories 11A thrauch 11E (a)

Major (b) 11inor (c)

Administrative

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Justification for reclassification:~

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h WBO D YY 2'It(%rh c & $ h /L Dov 3.

The application was filed (a) cursuant to written NRC request and the amendr.ent is being issued for the. convenience.

l of the Commission, or (b)

Other (State reason):

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Sigrature: [N sb Trancoartation Branch', IMSS 8204190004 820323 Date:

M/7/ Y L PDR ADOCK 071 * * ***

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MAR 3 01982

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GULF NUCLEAR, INC.

PACKAGE EVALUATION MODEL GNM-20 TYPE B QUANTITIES o

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2 02 MEDICAL CENTER BOULEVARD WEBSTER, TEXAS 77598

' PHONE:

(713) 332-3581 i

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CONTENTS PAGE l

1 General Information 1

1.1 Introduction 1

4 2

Package Description 1

2.1 Packaging 2

2.2 Contents of Package 2

3 Structural Evaluation' 2

3.1 Discussion 1

3.2 Design Criteria-2 3.3 Weight 2

3.4 Mechanical Properties of the Materials 2

3.5 Chemical and Galvanic Reactions 2

3.6 Positive Closure 2

3.7 Lifting Devices 2

i 3.8 Tiedown Devices 2

4 Hypothetical Accident Conditions 3

j 4.1 Free Drop 3

4.2 Puncture 3

4.3 Thermal 3

i-APPENDIX 1

Drawing-of GNM-20 4-7 j

2 Pictures of Free Drop Test 8-9 3

Pictures of Puncture Test 10-11 4

Pictures of Thermal Test 12-15 5

Radiation Profile 16 6

Approval Letter 71-2A 17 7

Witness 18 l

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GENERAL INFORMATION The enclosed information concerns a metal container within a metal container which is used to transport the Gulf Nuclear, Inc. Model 71-2A Americium-241/ Beryllium neutron source.

1.1 INTRODUCTION

The container, Model GNM-20, will be used to transport a 5 to 20 curie Americium-241/ Beryllium neutron source, Gulf Nuclear, Inc. Model 71-2A.

The GNM-20 with a 20 curie Americium-241/ Beryllium neutron source, Gulf Nuclear, Inc.

(GNI) source Model 71-2A, in place, has a transport index of approximately 3.

The container is cylindrical in shape and is transported in a vertical position.

The container has been painted safety purple for shipment an.d is sometimes used as a storage container within a controlled area.

2 PACKAGE DESCRIPTION 2.1 Packaging The GNM-20 is constructed of cold rolled, ten gauge steel

("T and has outer dimensions of twenty inches in diameter and twenty-four inches in length.

The inner container is a twelve inch diameter right cylinder.

The Americium-241/

Beryllium source is placed in the inner container and is retained with a screw cap.

The outer container lid is retained with a bar.

The outer container lid is four inches thick.

Both inner and outer containers are filled with a 60-40 weight percent of hydrated boric acid and polyester resin.

Detailed information concerning fabrication is presented in Appendix 1.

2.2 Contents of Package l

The GNM-20 may contain a source which may contain up to 20 curies of Americium-241.

The container will be used to transport Gulf Nuclear, Inc. cources, source model number 71-2A.

3 STRUCTURAL EVALUATION i

l 3.1 Discussion The GNM-20 container's basic integrity is due to the fact that the structure is a metal cylinder within a metal cylinder, both completely filled with a solid material.

The solid ma-terial is hydrated boric acid dispersed in polyester resin.

{l sJ This filler materials is self-extinguishing.

1 (1)

(2) 3.2 Design Criteria Since the radiation level of a 20 curie Americium-241/

Beryllium neutron source is low com'ared to the normal p

type B quantities, i.e. approximately 180 mrem /hr at l

thirty-six inches for the AmBe and approximately 7.2 R/hr j

for 20 curies of Cesium-137, The criteria for the neutron l

shield-is twofold; (1) a combination of hydrogenous material and distance from the source necessary to meet shipping requirements and (2) physical structure of the container i

must be capable of passing the hypothetical accident tests.

I 3.3 Weight i

The weight of the package is 350 pounds.

l 3.4 Mechanical Properties of the Materials All metal components of the container are fabricated from mild steel.

The shielding is a 60-40 weight percent hydrated boric acid and polyester resin.

3.5 Chemical and Calvanic Reactions The radioactive sources that will be transported in these containers are fabricated from stainless steel, 17-4 PH.

O The source model number is GNI 71-2A (See Appendix 8).

There will not be a reaction between the source and the mild steel housing.

Long term experience, approximately five years, indicates that there is no corrosion problem between boric acid and the mild steel structure.

3.6 Positive Closure The radioactive source is housed in the inner container which has a threaded cap.

The lid on the outer container retains the inner container.

The outer container lid is locked in place with a bar (See Appendix 1).

3.7 Lifting Devices i

There are two handles, one on each side of the container.

These handles are tested several times during production, painting and preparation for shipment.

3.8 Tiedown Devices There are no tiedown devices that compromise or add to the integrity of the container.

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(3)

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4 HYPOTHETICAL ACCIDENT CONDITIO.NS 4.1 Free Drop The GNM-20 was dropped thirty feet onto a inch steel plate placed on an eight inch thick concrete pad.

The

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container sustained some physical damage but shielding 1

and containment characteristics were not compromised (See Appendix 2 and 5).

l 4.2 Puncture The container was dropped forty inches, striking a six inch diameter bar, eight inches long.

The GNM-20 sustained minor damage (See Appendix 3).

I 4.3 Thermal

)

The CNM-20 was suspended over a six foot diameter tank t

containing diesel fuel.

The fuel was ignited and the fire maintained for thirty minutes.

Temperature was monitored to insure that a temperature of 1475 degrees Fahrenheit was reached.

i Results: The container underwent some deformation and flam-()

mable gases were emitted from?the container.

These gases were decomposition components of polyester resin.

When the fire was extinguished, the gases ceased to burn.

Contain-ment was not compromised (See Appendix 4).

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APPENDIX 7 b'3 They hypothetical accidents, drop test, puncture test and thermal test, were witnessed by the following in-dividuals.

300LL-h CF. Ho p e r b f t, Vi[e'-President Production

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Elick H.

Acree, Vice-President Research and Developn.ent l

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(16)

O APPENDIX 5 Radition Profile After Test GMM-20 20 Curie AmBe source Model 71-2A mrem /Hr at surface mrem /hr at 36 inches Top 74 1.8 Bottom 48 1.2 Front 80 1.6 Back 80 1.5 Left Side 84 1.6 Right Side 80 1.5 O

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APPENDIX 6 oc um swe s w US Deportrnent Wrhryon D C Mo of Transportaton Research and Special Programs Administration IAEA CERTIFICATE OF ~ COMPETENT AUT110RITY Special Form Radioactive Material Encapsulation Certificate Number USA /0149/S (Revision 1)

This certifies that the encapsulated source, as described, when loaded with the authorized radioactive contents, has been demonstrated to meet the regulatory requirements for special form radioactive material as prescribed in IAEA 1/ and USA 2_/ Regulations for the transport of radioactive naterials.

I.

Source Description -- The source described by this certificate is identified as Gulf Nuclear, Inc., Model AmBe 71-2A which is welded double encapsulation constructed of stainless steel which measures 1.246 inches OD by 2.937 inches in length.

II.

Radioactiv'e Contents -- The authorized radioactive contents of this source cor.sist of not more than 20 curies of Americium-241.

III. Expiration Date -- This certificate, unless renewed, expires J

September 30, 1984.

This certificate is issued in accordance with paragraph 803 of the I AEA Regulations 1/, and in response to the July 21, 1981, pet'ition by Gulf Nuclear, Inc., Houton, Texas, and in consideration of the associated inf omation therein.

Certified by:

Q&ksQ/9W on (DATE)

R. R.'RAWL _

Chief, Radioactive Materials Branch Of fice of Hazardous Materials Regulation Materials Transportation Bureau (17)

C,m 1/ " Safety Scries No. 6, Regulations for the Safe Transport of Radioactive Materials, 1973 Revised Edition" published by the International Atomic Energy Agency (IAEA), Vienna, Austria.

2/ Title 49, Code of Federal Regulations, Parts 170-178, USA.

(8)

APPENDIX 2 FREE DROP TEST-

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APPENDIX 7 (Con't)

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(11).

~~

APPENDIX 3 (Con't)

PUNCTURE TEST

(

f W ' f,r@-f r?'?v y ? 7'**T S,*** 3 m,,..--

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(12)

APPENDIX 4

(.

THERMAL TEST

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r x3 p:

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(13)

APPENDIX 4 (Con't)

THERMAL TEST 3 +,~..y,, 4r; - : ; w ;.: n]

v.-

J

6 s _t?

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(14)

APPENDIX 4 (Con't)

THERMAL TEST

., r, - v, r n g

. M..; T,/. <b.7.61.

MdIf0'd i J

n.

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g GNM-20 two minutes after fire was extinguished

(15)

APPENDIX 4 (Con't)

TilERMAL TEST

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4 I

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